问题
问答题 简答题
一中热源不足,又要保证质量合格,此时稳定应采取哪些措施?为什么?
答案
参考答案:
首先要在冷312冷后温度较低的情况下,采取稳定塔降压操作。这是因为稳定塔降压后,在保证汽油蒸气压的前提下可降低塔底温度,减少换304需要的热量,从而缓解热源不足的矛盾。
一中热源不足,又要保证质量合格,此时稳定应采取哪些措施?为什么?
参考答案:
首先要在冷312冷后温度较低的情况下,采取稳定塔降压操作。这是因为稳定塔降压后,在保证汽油蒸气压的前提下可降低塔底温度,减少换304需要的热量,从而缓解热源不足的矛盾。
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Jack Brown is very fat. His wife is worried about his health. "It's not good for your health. You should see the doctor and ask him how to lose weight (重量)," she tells him. "OK," answers Jack. He goes to see his doctor. The doctor weighs him. Then the doctor says, "You are 90 kilograms heavy. It's very bad. You must lose about 20 kilograms. " "Oh, what should I do, Doctor?" Mr Brown asks in surprise. "You should eat only fruit and vegetables. You must run 5 kilometers a day for the next 100 days. Then call and tell me how much you weigh," the doctor says. Jack goes home and does what the doctor has told him. One hundred days later, he calls the doctor. "Jack Brown here, Doctor," he says, "I'm calling to tell you about my weight. I have lost 20 kilograms. " " Great," says the doctor. "Yes, but there's a problem," Jack says. "I'm 500 kilometers away from home. I don't know how to get back ! " | |
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